Safety device or arrester for colliery winding-cages, hoists, and the like.



J. YATES & G. HEYES.

SAFETY DEVICE 0R ARRESTER FOR GOLLIERY WINDING GAGES, HOISTS, AND THELIKE.

APPLICATION FILED DEC. 30. 1913. 1,12'?,,71 3. Patented Feb.9, 1915.

12 SHEETS-SHEET 1.

THE NORRIS PETERS co PHDTO-LITHOH WASHING rim. 0 c

J. YATES & G. HEYES. SAFETY DEVICE OB. ARRESTER FOB. COLLIERY WINDINGGAGES, HOISTS, AND THE LIKE.

APPLICATION FILED DEC. 30, 1913.

1,127,713. Patented Feb.9, 1915.

12 SHEETS-SHEET 2.

THE NORRIS PETERS Ca. PHOTO-LITHQ. WASHII. ;m-': D. c.

J. YATES & C. HEYES, SAFETY DEVICE 0B. ARRES'I'BR FOR GOLLIERY WINDINGGAGES, HOISTS, AND THE LIKE.

APPLIOATIOH FILED DEC. 30. 1918. 1,127,71 3., Patented Feb. 9, 1915.

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APPLICATION FILED DEC. 30, 1913.

1,127,713., Patented Feb.9, 1915.

12 SHEETS-SHEET 4.

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J. YATES & G. HEYES. SAFETY DEVICE ORYARRESTBR FOR GOLLIERY WINDINGGAGES, HOISTS, AND THE LIKE. APPLICATION FILED DEC. 30. 1913.

L1 27,71 3. Patented Feb.9, 1915.

12 BHEETSSHEBT 5.

THE NORRIS PETERS C0. PHOTO-LITHON WASHING rON. D. C

I N J. YATES & G. HEYES.

W SAFETY DEVICE 0B ABBESTEB FOR GOLLIERY WINDING GAGES, HOISTS, AND THELIKE.

APPLICATION FILED DEC. 30, 1913.

1,127,71 3a Patented Feb. 9, 1915.

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J. YATES & C. HEYES. SAFETY DEVICE OR ARRESTER FOB. GOLLIERY WINDINGGAGES, HOISTS, AND THE LIKE.

APPLICATION FILED 1330.30, 1913. 1,127,713. Patented Feb.9, 1915.

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I J. YATES & G. HEYES. SAFETY DEVICE 0R ARRESTER FOR COLLIERY WINDING 0APPLICATION fILED DEC. 30. 1913. 1,1 27,7 1 3, Patented Feb. 9, 1915,.

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AGES, HOISTS, AND THE LIKE.

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J. YATES & G. HEYES. SAFETY DEVICE 0B. ARRESTER FOR GOLLIERY WINDINGGAGES, HOISTS, AND THE LIKE.

APPLICATION FILED DBO. 30, 1918.

Patented Feb.9, 1915.

12 SHEETS-SHEET 9.

THE NORRIS PETERS c0. PHOTO-LITHCL. WASHINGIDN, D.

J. YATES & C. HEYES.

SAFETY DEVICE 0B. ARRESTER FOR. GOLLIERY WINDING GAGES, HOISTS, AND THELIKE.

APPLICATION FILED DEG. 30, 1913.

1, 1 2%"? 1 3. Patented Feb. 9, 1915.

12 SHEETS-SHEET 10.

I/VVE/VTOR'J Mo AW? h wm a) J. YATES & G. HEYES.

SAFETY DEVICE OB. ARRESTER FOR COLLIERY WINDING GAGES, HOISTS, AND THELIKE.

APPLICATION FILED DEC. so. 1913.

1,127,371 3. Patented Feb. 9, 1915.

12 SHEETS-SHEET 11.

THE NORRIS PETERS CO. PHOTU-LITHO, WASHINGION. D. r

J. YATES & G. HEYES.

SAFETY DEVICE 0R AREESTER FOR COLLIERY WINDING CAGES, HOISTS, AND THELIKE.

APPLIGATION FILED DEC. 30. 1918.

1,127,71 3. Patented Feb. 9, 1915.

12 SHEETSSHEET 12.

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FED %TAFF% FAENT @FFlQ.

JACK YATES AND CHARLES HEYES, OF ST. HELE'NS, ENGLAND.

SAFETY DEVICE OR ARRESTER FOR GOLLIERY WINDING-CAGES, HOISTS, AND THELIKE.

Application filed December 30, 1913.

To all whom it may concern,

Be it known that we, JACK Yarns and CHARLES HnYns, subjects of the Kingof Great Britain and Ireland, residing, respectively, at 13 Josephstreet, Sutton, St. Helens, in the county of Lancaster, England, and theLocomotive Inn, Sutton aforesaid, have invented new and usefulImprovements in Safety Devices or Arresters for Colliery Winding-Cages,Hoists, and the like, of which the following is a specification.

The invention relates to safety devices or arresters for collierywinding cages, hoists and the like.

It consists of a gripping appliance for the conducting rods of the cage,which appliance travels with the cage but is not secured thereto. On thebreakage of the wind ing rope or suspension chains of the cage, a springor load, or both combined, is or are arranged to cause the appliances orarresters to grip the conducting rods and to be held thereto, the cagebeing free to descend to a w-ery slight extent when a shoe, wedge 0rsuitable part carried by the cage acts upon the arresters and by thewhole weight of the cage and contents, causes the appliances to exertsuch a powerful and irresistible grip upon the conducting rods that thecage is brought to a standstill almost simultaneously with the breakageof the rope or chains, and the cage is securely held gripped to theconducting rods.

An important feature of the invention consists in the provision of meanswhereby the usual amount of slack in the rope or chains which alwaysoccurs at intervals in the normal working of the cage causes no effectupon the gripping devices or arresters, which then do not act upon theconducting rods, but are only brought into action by the actual failurein the haulage means. Thus there is no liability of thesafety anpliances gripping the conducting rods unless in case of actualnecessity, preventing liability of injury to such rods.

In the accompanying drawings, Figure 1 is a face view of a grippingappliance, made in accordance with the invention and out of action. Fig.2 is an end view thereof. Fig. 3 illustrates the appliance from theopposite side of Fig. 1. Figs. 4 to 10 are detail views which will bereferred to in the following description. Fig.11 shows the appliance inaction gripping the conducting Specification of Letters Patent.

Patented Feb. 9, 1915.

Serial No. 809,465.

rod. Fig. 12 shows the appliances applied to a winding cage, out ofaction, and the controlling means for the device. Fig. 13 is a viewsimilar to Fig. 12 with the appliances in action to arrest the cageowing to the breakage of the winding rope. Fig. 14 is an end view of thecage showing the arresters applied thereto. Fig. 15 indicates a modifiedmeans of controlling the arresters. Figs. 16 and 17 show how theinvention may be applied to hoists. Figs. 18 to 23 show modifications ofthe invention.

We will first describe a convenient form of the gripping appliance orarrester which may be made to any desired size, and is illustrated inFigs. 1 to 11.

The construction embodies a cross head a having reduced end pieces a,and a pair of levers b, 6 connected together by a link I) at each sidethereof and pivoted at b to the cross head a. The lower ends of theselevers b are provided with grippers 0, c pivoted to the levers at 0',arranged one at each side of the conducting rod (Z. These grippers areguided toward and from each other in a straight line by rods or bars 0secured to one of the grippers and passing loosely through holes in theother gripper. Behind the levers b are a pair of crossed links d,pivoted together at d and at their lower ends to the levers b, the upperends being pivoted to across bar 6. y A rod 6 is slidable through thebar 6 and the head a, the end of the rod passing through a slot 6 in alever 6 fulcrumed at c on to a plate e secured to the cross head a. Thelever e rests upon a nut or enlargement f, on the lower end of the rod6, the upper end of the rod 0' having also a head 6 thereon extendingnormally well above the cross bar 6. The means for actuating the rod efrom the lever 6 maybe varied. A spring f is coiled around the rod 6between the bar 6 and'the cross head a. It is possible for the rod '6 tobe pulled down some distance by the lever 6 without affecting the leversb, but should the rod 6 be pulled down so far as to bring the head 6 tobear against and lower the cross bar e, compressing the spring f, thecrossed links d would be slightly compressed thrusting the upper ends ofthe levers I) outward and causing the grippers a to bind on to theconducting rod (Z. If the upper ends of the levers b are thenthrustfarther apart by a descending body an enormous gripping force can beexerted by the gripping blocks on to the conducting rod d. When theactuating force is removed the spring f returns the parts to theirnormal position. If the conducting rods are spirally wound wire ropes,as are usually employed, the hollowed out interior face of each blockmay be fashioned to a corresponding spiral as shown in sectionalelevation of one of the grippers in Fig. 5, in plan view in Fig. 6, andin front elevation in Fig. 7. If plain metal conducting rods are usedthe interior hollowed face of the grippers may be milled to providesuitable teeth to afford a grip on to the smooth rod as shown on one ofthe grippers in sectional elevation in Fig. 8, plan view in Fig. 9 andface view in Fig. 10. The details of construction of the safetyappliance or arrester as illustrated in Figs. 1 to 11 may be varied. Thecontrolling means employed for pulling down the rod 6 on the breakage ofthe winding rope or suspension chains may be greatly modified but wehave shown in the accompanying drawings certain methods of effectingthis by way of example only.

Referring to Figs. 12 to 14 it will be seen that each conducting rod dis provided with one of the improved arresters. These arresters aredisposed loosely in slotted brackets g secured to the cage, suchbrackets 9 being shown in elevation in Fig. 11 and in plan in Fig. 4:,the reduced extension a of the cross head a being placed within andeasily slidable in the slot in the bracket. The shoes A secured to thewinding cage through which the conducting rods cl pass, are grooved atthe sides and disposed between the upper curved ends of the levers b.When the cage is working under normal conditions the cross head a restsupon the bottom 9 of the brackets g and the appliances travel up anddown with the cage. The levers e of each safety appliance extend inwardand are connected by cords h to the chain attachment plate h to whichthe winding rope is secured and by links it to a weight if. Then theweight of the cage is borne by the winding rope the levers e are raised,lifting the weight it which is slidable on a rod k secured to the cage,and compressing a spring i coiled around the rod if between the weightand a cap 71 on the rod. The levers 6 may yield with the slack of thesuspension chains to a considerable extent to meet any ordinary requirements without pulling down the rods 0' far enough to bring the safetydevice into action. In case of breakage of the winding rope or cagesuspension chains, the load 71 assisted by the spring 11, would fall onthe rod k as shown in Fig. 13. The immediate effect of this would be tocause the levers e to pull down the rods e sufficiently to cause thehead 6 of the rod to force down the cross bar 6 and thus turn the leversb on their fulcra and cause the gripping blocks 0, c to bind onto theconducting rod (l and secure the safety appliances to the conductingrods. As explained, the safety appliance is not secured rigidly to thecage but is slidable in the brackets 9 carried by the cage. Immediatelyafter the safety appliances have gripped the conducting rods (Z theshoes A secured to the cage, in the descent of the cage, force outwardthe upper ends of the levers Z) exerting the whole weight of the cageand contents, and so cause the grippers 0, 0 to become absolutely lockedto the conducting rods h arresting immediately the further descent ofthe cage.

A modification in the control of the safety appliances is illustrated inFig. 15. In this case also the appliance is slidablein brackets 9attached to the cage. The levers Z) carrying the gripping blocks 0 attheir lower ends are connected at their upper ends to rods 7' which areslidable in cross bar j and in brackets j secured to the cage, the rods7' having collars j thereon toward their lower ends. The cross bar 7" isconnected to the cage by any suitable number of springs and also by acord is to the suspension chain connection of the winding rope. hen theweight of the cage is supported by the winding rope and the suspensionchains are taut the parts are in the position shown in the drawings andthe springs are in tension. In case of breakage however, the springsresile and draw down the cross bar 1" which slides on the rods until itcomes into contact with the collars pulling down the rods j] causing thelevers Z) to turn on their fulcra and jamming the grippers 0 onto theconducting rods (Z to secure the safety appliances to the conductingrods. The continuing descent of the cage acts, through the shoes A, tothrust the ends of the levers Z) farther apart as already explained tolock the appliances and the cage securely to the conducting rods d. Itwill be noticed that there is considerable play between the cross bar jand the collars 7' on the rods j to allow for slack chain during theordinary working of the cage to prevent the safety devices from beingprematurely brought into action.

Figs. 16 and 17 show the invention applied to a hoist with anothermethod of control. The levers b are formed at their lower ends withserrated faces to grip a flat sided conducting rod 0?, and are pivotedto a block at slidable in a recess a formed in the side of the hoist n.The levers b have arms 0 attached thereto connected by springs 0 tofixings 0 on the hoist. The levers b are maintained out of action bycords attached to the arms 0 and to levers p on a rod p rotatable inbearings p on the hoist. The rod p is provided with cranks p p connectedby cords p to a bracket 9 on the winding rope 1', which, so long as itremains unbroken and taut with the weight of the hoist, serves to'maintain the safety device out of action as shown in Fig. 16. On thefailure of the winding rope the springs 0 pull down the arms 0 of thelevers Z) and cause the same to bind upon and become fixed to theconducting rod d the shoe A. on the hoist, on the further downwardmovement of the hoist thrusting outward the upper ends of the levers Z2as shown in Fig. 17 thus securely jamming the hoist upon the conductingrods d.

In the arrangement shown in elevation in Fig. 18 and in plan in Fig. 19,the gripping blocks are positively actuated by toothed gearing. Thegrippers 0 are connected by studs s to the lower ends of the levers bone of which is mounted on a cross shaft 26 one end of which is carriedin a block 25 slidable on rods The other lever b is carried on a spindlet rotatable in the block t. The cross shaft 6 has a toothed pinion ugearing with a similar toothed pinion u on the spindle 25 The crossshafts I? carry loaded levers a lifted during the normal working of thecage by means of cords or chains 1& attached to the ring 4) of thewinding rope, to which the suspension chains '0 are secured. If theweighted leversfall due to breakage of the winding rope the shafts t arerotated. Each of the gripper blocks 6 is thus thrust toward the guiderod (Z gripping the same, by the action of the toothed wheels u u andthe studs 8 connecting the lower ends of the levers Z) to the grippers0. The levers b are thus opened outward at the top and the cagecontinuing to descend the shoes A. thrust the upper ends of the levers bfarther apart and jam the grippers on to the conducting rods (Z asalready explained. The blocks t are slidable upon the rods t allowingthe cage to descend sufiiciently to bring the shoes A into action asdescribed. The bearings B of the cross shafts t also have sufhcient playor movement permitted to allow the cage to descend to a slight extentwhen the grippers have been bound to the conducting rods d by the fallof the loaded levers a During the ordinary working of the cage theloaded levers a may sway to a certain extent along with the slack of thewinding rope without binding the grippers c to the guide rods cl.l/Vhere a third guide rod d is used, as shown in the plan view Fig. 19,a gripping device may also be applied to this third rod, similar to thatdescribed, the toothed gearing u a being actuated by a crank w on one ofthe cross shafts t connected by a rod w to another crank L0 on the axisof one of the levers through which the gripper blocks 0 are operated.

The arrangement shown in elevation in Fig. 20 and in plan view in Fig.21 is suitable for a passenger lift. The levers b are pivoted each to ablock m slidable in the brackets as and are formed with knife edges :0The loaded levers g pivoted to the levers Z) are normally raised bycords or chains 3 attached to a bracket "1 on the winding rope 3 In caseof breakage of the winding rope and consequent breakage of the cords orchains y spring actuated cords z assist in pulling down the loadedlevers y and cause the knife edge of the levers b to dig into the woodenside conducting bars 2 of the lift and secure the gripping levers Z) tothe bars 2. On the further descent of the lift the wedge or part 3acting on the upper part of the levers 7) serves to force the knife edgeof the levers Z2 farther into the wooden conducting bars 2 with the fullweight of the lift so as to securely bind the lift to the bars 2 andarrest its descent.

Figs. 22 and 23 show in elevation and plan an arrangement applied to apassenger 11ft with four corner conducting bars, and in which a doublegripper device is employed for each bar. Two cross shafts 4 4.- areused, mounted to rotate within blocks 5 loose upon guide rods 6. One ofeach pair of gripper levers 7) is mounted on the ends of the crossshafts4 and swivels therewith, and is formed with quadrant teeth 7 gearingwith similar quadrant teeth 8 upon the other gripper lever 79 which isrotatable upon a stud 9 carried by the block 5. When the cross shafts 4are rotated by the loaded levers 10 on breakage of the winding rope inmanner already described the lower ends of each gripper lever 72, whichends are formed with saw teeth or a knife edge, are dug into the cornerguide bars 11. The levers Z) are thus secured to the bars 11 and as thelift descends the blocks 5 slide on the rods 6 against the action ofsprings 12, whlch springs are not however essential, and the shoe orwedge piece 13 forces the upper ends of the levers I) still fartherapart to effectually bind the gripper devices to the guide bars 11 andarrest the further descent of the cage.

We declare that what we claim is. n

1. Safety devices or arresters for colliery winding cages, hoists or thelike, consisting in combination, of guides carried by the cage, blocksslidable in said guides, levers pivoted to the blocks, grippingappliances carried by the said levers, guides for the cage or hoist,cage suspension means, means to actuate the levers to cause suchappliances to grip and be secured to the last named guides on thefailure of the cage suspension means, and means, carried by the cage, toact upon the levers to cause the gripping appliances to exert a powerfulgrip upon said guides to bring the cage to a standstill almostsimultaneously with the breakage of the suspension means, substantiallyas described.

the former in inoperative position during slight slackening of thesuspension means but which will actuate the first named pivoted leversto cause the grippers to bind upon the last named guides in the event ofbreakage of the suspension means to arrest the gripping device, meanscarried by the cage to act upon the pivoted levers to cause thegrippers'to be jammed onto said guides by the entire weight of the cageandload, substantially as described.

3. An improved safety appliance for colliery windingcages comprisinggrippers, a pair of levers carrying said grippers, the levers ineachpair being connected together by toothed gearing, blocks to whicheach pair of levers are pivoted, guides carried by the cage on whichsuch blocks are slidable, guides for the cage, cage suspension means,loaded pivoted levers connected to the cage suspension means and capableof swaying inop'eratively with the slack in such means in the ordinaryworking of the cage, but

Copies of this patent may be obtained for adapted to actuate all thepairs of pivoted levers synchronously on the failure of the cagesuspension'means' to actuate the grip pers to cause them to grip uponand be secured to the guides forthe cage, means carried by the cage toact upon the pivoted levers and bind the grippers upon the guides forthe cage with the entire'weight of the cage and contents so as toimmediately arrest the descent of the cage and securely suspend it uponthe guides for the cage. substantially as described and shown.

4. A) safety device or arrester for lifts, hoists or the like,consisting, in combination, of guides carried by the lift,blocks*'slidable in said'guides, levers pivoted on said blocks, gripperscarried by said levers, guide bars for the lift, lift suspension means,means for locking the pivoted levers to the guide bars of the lift'onfailure of the suspensionmeans and means carried by the lift for wedgingthe pivoted levers securely tothe guide bars to arrest the descent ofthe lift, substantially as described. i

In testimony whereof We have signed our names to this'specification inthe presence of two subscribing witnesses.

J ACK YATES. CHARLES HEYES.

Witnesses JOSHUA ENTWIsLE, NORMAN KIERN'AN.

five cents each, by addressing the Commissioner of Patents,

Washington,I .C.

